Experiment of December 14, 2025:

The time to submit an answer is over. You can now view the solution of the experiment.

Solution video:

Note: Please log-on first to gain jokers for viewing the solutions.

You need to view the complete video to collect additional jokers. Your joker status is shown on the results page.

Experiment:

Question:

What happens when she pierces the balloon with the needle from a distance of 1–2 metres?

A) The balloon bursts. The water falls into the sieve and splashes completely out of the top of the sieve.

B) The balloon bursts. The water falls straight down through the sieve.

C) The balloon bursts. The water splashes outwards in a radial pattern, some of it also splashing back upwards.

D) The water drips from the balloon into the sieve, collects in the middle and flows out slowly.